/* ====================================
   BASE - Reset, Variables, Typography
   ==================================== */

/* CSS Variables - Brand Colours (extracted from Taiso Newsletter March 2026) */
:root {
  /* Primary */
  --color-primary-dark: #3a0080;
  --color-primary: #5819BF;
  --color-primary-light: #f0eaff;

  /* Accents */
  --color-accent-cyan: #3AEEEE;
  --color-accent-yellow: #f0c040;
  --color-accent-red: #e05a5a;

  /* Neutrals */
  --color-white: #FFFFFF;
  --color-light-grey: #f7f3ff;
  --color-grey: #888888;
  --color-dark-grey: #333333;
  --color-black: #000000;

  /* Fonts: Inter for UI (buttons, nav, body). Barlow only on h1–h6. */
  --font-primary: 'Inter', 'Open Sans', sans-serif;
  --font-secondary: 'Inter', 'Open Sans', sans-serif;
  --font-heading: 'Barlow Condensed', sans-serif;

  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 40px;
  --spacing-xl: 60px;
  --spacing-xxl: 80px;

  /* Layout */
  --container-width: 1200px;
  --nav-height: 85px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
  --shadow-purple: 0 12px 40px rgba(88, 25, 191, 0.15);
  --shadow-cyan: 0 8px 30px rgba(58, 238, 238, 0.3);

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  /* Easing */
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ====================================
   KEYFRAMES
   ==================================== */

@keyframes gradientShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes bounceIn {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.15); }
  70%  { transform: scale(0.95); }
  100% { transform: scale(1); }
}

@keyframes shimmer {
  0%   { transform: translateX(-100%) skewX(-15deg); }
  100% { transform: translateX(250%) skewX(-15deg); }
}

@keyframes countUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ====================================
   SCROLL REVEAL SYSTEM
   ==================================== */

.reveal,
.reveal-left,
.reveal-right,
.reveal-scale {
  will-change: opacity, transform;
}

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-spring);
}

.reveal.revealed,
.reveal-left.revealed,
.reveal-right.revealed,
.reveal-scale.revealed {
  opacity: 1;
  transform: none;
}

/* Stagger delays */
.delay-1 { transition-delay: 0.08s; }
.delay-2 { transition-delay: 0.16s; }
.delay-3 { transition-delay: 0.24s; }
.delay-4 { transition-delay: 0.32s; }
.delay-5 { transition-delay: 0.40s; }
.delay-6 { transition-delay: 0.48s; }

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-left, .reveal-right, .reveal-scale {
    opacity: 1;
    transform: none;
    transition: none;
  }
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ====================================
   RESET
   ==================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-secondary);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-dark-grey);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ====================================
   TYPOGRAPHY
   ==================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: var(--color-dark-grey);
}

h1 { font-size: clamp(32px, 5vw, 56px); }
h2 { font-size: clamp(24px, 4vw, 40px); }
h3 { font-size: clamp(20px, 3vw, 28px); }
h4 { font-size: 20px; }
h5 { font-size: 18px; }
h6 { font-size: 16px; }

p {
  margin-bottom: var(--spacing-sm);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-primary-dark);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  list-style: none;
}

/* ====================================
   LAYOUT UTILITIES
   ==================================== */

.container {
  width: 90%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.text-center { text-align: center; }
.text-left   { text-align: left; }
.text-right  { text-align: right; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ====================================
   RESPONSIVE BREAKPOINTS
   ==================================== */

@media (max-width: 768px) {
  html { font-size: 15px; }
  h1 { font-size: 32px; }
  h2 { font-size: 24px; }
  h3 { font-size: 20px; }
}

@media (max-width: 480px) {
  html { font-size: 14px; }
  h1 { font-size: 28px; }
  h2 { font-size: 22px; }
}